1.【解析】选B。分析句子成分可知who作is的表语，do you think是插入语。特殊疑问句中常作插入语的有：do you believe, do you suppose, do you expect等。注意其后的成分按陈述语序排列，如What do you think he will say?
2.【解析】选B。as many as多达；as far as远达；as well as除……之外；还；as long as只要。根据句中的in the north, in the east, in the south可知是地域的扩展或延伸，故选择B。reach as far as意思是“延伸到…… ”。
